<template>
	<button @click="modalOpen = true">打开一个对话框</button>

	<!-- 对话框代码 -->
	<Teleport to="body">
		<div v-if="modalOpen" class="modal">
			<div>这是对话框</div>
			<button @click="modalOpen = false">关闭对话框</button>
		</div>
	</Teleport>
</template>

<script lang="ts">
import { defineComponent, ref } from "vue"

export default defineComponent({
	name: "ModalButton",
	setup(props) {
		// 控制对话框显示或者隐藏的！
		const modalOpen = ref(false)
		return {
			modalOpen
		}
	}
})
</script>

<style>
.modal {
	position: absolute;
	top: 0;
	right: 0;
	bottom: 0;
	left: 0;
	background-color: rgba(0, 0, 0, 0.5);
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
}

.modal div {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	background-color: white;
	width: 300px;
	height: 300px;
	padding: 5px;
}
</style>
